Optocouplers / Photocouplers

Optocouplers are a type of isolator that use a low-power optical signal to transmit one signal from one circuit to another independent circuit. Optocouplers are comprised of an infrared LED light source and an integrated photo detector which usually consists of a photodiode and detector circuit. This optical link or coupling provides electrical isolation between the two circuits which makes the trouble shooting and reliability of circuits more straightforward. These devices are often used to provide electrical isolation between digital signals on the same board, but they are also commonly used in medical and industrial instruments, motor control systems, and signal conditioning circuits. Optocouplers have very high input-to-output isolation voltage and low capacitance, which makes them suitable for signal transmission in high speed applications. Additionally, they manage the call back current of the circuit they are connecting, allowing them to protect against overloads.
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Hot FOD8173SD


Transistor Output Optocouplers Opto Phototransistor Output SM-DIP4
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ON Semiconductor 228895
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AUD 0.1591
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LTV-217-C-G


Lite-On Transistor Output Optocouplers Optocoupler, AC 600%, 5KV, 4 PIN
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Lite-On 207696
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AUD 0.0931
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LTV-814S-TA


Transistor Output Optocouplers Optocoupler
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Lite-On 204203
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AUD 0.2463
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EL357C


3.75kV 50mA 6V 1.2V DC SOP-4 Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 195377
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AUD 0.0522
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TLP181GB-S


Optocouplers SOP-4 RoHS
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Youtai 194839
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AUD 0.1009
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PC817X3CSP9F


Transistor Output Optocouplers Photocoupler
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Sharp 194000
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AUD 0.0933
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EL817S1(C)(TU)-F


Optocouplers SMD-4 RoHS
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Everlight 176122
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AUD 0.0427
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PC817C


DIP-4 Optocouplers - Phototransistor Output ROHS
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Youtai 175473
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AUD 0.0272
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TLP187(TPL,E(T


Optocouplers SO-4 RoHS
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Toshiba 168125
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AUD 0.243
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FOD817C3SD


Transistor Output Optocouplers TRANSISTOR OUTPUT SMD LEAD BEND VDE
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ON Semiconductor 2289
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AUD 0.2067
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